Charging device for gas-producers and other furnaces.



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HEINRICH BITTMANN, Ol? ERANKFORT-ON-THE-MAIN. GERMANY, ASSIGNOR TO COR-?ORATION F BETALLBANK @L METALLURGISCHE GESELLSCHAFT A. G., OF FRANK-FORT-ON-THEFVIAIN; GERMANY.

Specification of Letters Patent.

Patented Nov. 2G, 1912.

.pplica'tion filed April 22, 1911. Serial N0. 622,717.

L'o all whom it Imay concern:

Be it known that I, HEINRICH BrrTMANN, subject of the Emperor ofustria-Hungary, and residing at t Altknigstrasse,Frankfort-onthe-lVlain, Germany', have invented certain new and useful.improvements in a Charging Device for Gas Producers and other Furnaces,of which the following is a specification.

The invention relates to an automatic charging device for @as producersand other furnaces, and has for its object to distribute the charge inuni'torni layers over the whole section of the furnace. This is obtainedby employing an inclined chute or the like, arranged to rotate around avertical axis, and the lower outflow of which is preferably providedwith a suitably shaped outcut. A charging device of this kind allows theInaterial to be conveyed into the furnace in such a manner as to causeit to spread out over the whole furnace section in layers of uniformthickness and in which the grain sizes of? the material are uniformlydistributed.

ln the accompanying drawing, Figure 1 is a longitudinal section, Fig. 2a horizontal section on line .X- of Fig. 1, and Fig. El au elevation ofthe lower end of the Jfeeding chute.

The special feedingl device may have the form ot a chute or tube a andis sufficiently inclined to allow the material supplied by the hopper tolow freely down through it'. 'The lower outlet 7) of the chute a endsnear thc centerol' the feed opening of the Jfurnace 5%. 'The chutebottom is preferably provided at its lower end with an outcut c, taperedor otherwise shaped. lilith a View to closing' the Furnace to the outerair, the outlet 7) nds upon a covering' plate rZ or the like, whichcovers in an air-tight manner the leed opening' ot the furnace byimmersing the vertical tlangc thereof in a water tank7 or by forming itinto a water receptacle, into which thel flanged border ot' the toedopeningr innntuscd.

The t'ccd chute n is connected at its upper end to a slightly inclinedplato c upon which lies tho material to be fed into the furnace. .frhopper f supplies the material to the plate c which is 'provided with ajacket f/ supporting: at its upperend a water gutter. The hopper j"beingT constantly lilled with material, the furnace `gastight to theouter air. A cylinder h surrounding the lower part oi' the feed hopper fand capable of being lowered and raised by nieans of rods actuated bymandrel and hand wheel controls the quantity ot material flowing fromthe plato f into the chute a. The whole body vt'ormed by the chute uwith cover plate d, and plate c with jacket g can be rotated by nit-ansot' a suitable driving' device. such as a circular rail supported by andrunning' on `V-grooved rollers one ot which is rotated by means of thepul` ley 77.

The operation is as follows: During the rotation, the material lying'upon the plate e is conveyed toward the upper owning' o' the chute o.Owing to tho tact that the plate is slightly inclined toward thisopenlng, the material in the hopper is constantly raised and loweredduring' the rotation as the high part of the plate o passes underditlierent parts ot the columns of niaterial. thl's causing' the outflowof the material troni the feed hopper toward the chute o., any stopping'ot' thc material being thereby avoided. From the plate c the materialtlows uniformly into the chute a, gliding through its lower opening' Land through the outcut c into the furnace. The outlet. 7) and outcut care shaped in such a manner that at all positions of the rotating chutethe material is caused to spread in the shape ot a sector s s s upon thesurface ot the charge contained in the furnace, uniform layers withrespect to thickness and with respect to the distribution ot the `rainsizes of the material being thus tormed upon the charge.

The purpose of the outcut c is to avoid an accumula-tion, at the center,of the finer inaterial falling' down more acclivously, and of thecoarsermaterial falling down in a more obtuse angle, at the periphery. Anothereffect of the outcut c is to produce a uniform thickness of the layersby causing the material which has the tendency to fall down in a compactstream, to spread out over the whole sui-tace. lt. is obvious that theshape ot the chute out-let` and of the outcut c deponds upon differentfactors, especially on the density of the material to be fed, the sizeof the grains and the proportion of their mixture, and must be adaptedto each individual case by experiments. outcut c is tapered from itslower end in order to direct the greater part of the mate rial towardthe periphery of the furnace. Furthermore the width of theoutcnt at itslower end is less than the width of the chute bottom, so that one partof the material may glide past the side of the cutout and thus bedirected farther toward the periphery of the furnace. has a sectionenlarged toward its lower end according to the sector shape of the layerspread out upon the chargein the furnace.`

1What I claim is;

1. In a feeding device for gas producers and other furnaces, thecombination with a rotatable inclined chute or channel having its bottomenlarged. toward the lower end and opening nearly upon the center of thefeed opening of the furnace and also having a tapered outcut at thelower end, andan inclined plate arranged at the upper end of the chuteto be rotatable therewith, of means for rotating the chute around thevertical axis of the furnace, said plate being adapted to be loaded witha column of the Vmaterial to be fed and to discharge the material intotige chute during the rotation thereof.

2. 1n a feeding device' for gas producers and other furnaces, thecombination .with a rotatable inclined Ichute or channel having itsbottom enlarged toward its lower end and opening nearly upon the center.of the feed opening of the furnace and also having a tapered outcut atthe lower end, an inclined plate arran ed at the upper end of the chuteto be rotata le therewith, and a feed hopper above said plate, of meansfor rotating the chute around the vertical axis of the furnace, saidplate being adapted to be loaded with a column of the material to be fedand to disl l l `acatar/es ljreferably the charge .the material into thechute during the rotation thereof.

3. nv a feeding and other furnaces, the combination with an inclinedchute or channel having its bottom enlarged toward the lower end andopening nearly upon the center of the feed opening of the furnace andalso having a tapered outcut at the`lower end, and an inclined Thefeeding chute preferably l plate arranged at the upper end of the chuteto be rotatable therewith, said plate being adapted to be loaded with acolumn of the material to be fed and to discharge the material into thechute during vthe rotation thereof, and a feed hopper above said plate,of means for rotating the chute around the vertical axis ofthe furnace,and a cylinder surrounding the lower discharge opening of the hopper andadapted to be lowered and raised.

4. A feeding device for gas producers'and other furnaces, consisting ofa cover cover-A ing the feed opening of the furnace in a gas vtightmanner, an inclined chute or channel ending nearly at the center of saidcover and provided with a tapered outcut at its lower end, a containerwith a. slightly inclined bottom plate connected with said chute, ahopper arranged above said container, a movable cylinder surroumlinglthe lower discharge end of the hopper, and a gas tight connectionbetween the cylinder and the con*y tainer.

In 'testimony whereof, l have signed my name to thisV specificatiomlinthe presence of two subscribing witnesses.

HENR'CH BITTMEN.

Witnesses z JEAN GRUND, CARLl Guzman.

device for gas producers'

